Influence of nasal cavities on the voice quality: Computer simulations and experiments
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73602603" target="_blank" >RIV/61989592:15310/20:73602603 - isvavai.cz</a>
Výsledek na webu
<a href="https://obd.upol.cz/id_publ/333182489" target="_blank" >https://obd.upol.cz/id_publ/333182489</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1121/10.0002487" target="_blank" >10.1121/10.0002487</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Influence of nasal cavities on the voice quality: Computer simulations and experiments
Popis výsledku v původním jazyce
Nasal cavities are known to introduce antiresonances (dips) in the sound spectrum reducing the acoustic power of the voice. In this study, a three-dimensional (3D) finite element (FE) model of the vocal tract (VT) of one female subject was created for vowels [a:] and [i:] without and with a detailed model of nasal cavities based on CT (Computer Tomography) images. The 3D FE models were then used for analyzing the resonances, antiresonances and the acoustic pressure response spectra of the VT. The computed results were compared with the measurements of a VT model for the vowel [a:], obtained from the FE model by 3D printing. The nasality affects mainly the lowest formant frequency and decreases its peak level. The results confirm the main effect of nasalization, i.e., that sound pressure level decreases in the frequency region of the formants F1–F2 and emphasizes the frequency region of the formants F3–F5 around the singer’s formant cluster. Additionally, many internal local resonances in the nasal and paranasal cavities were found in the 3D FE model. Their effect on the acoustic output was found to be minimal, but accelerometer measurements on the walls of the 3D-printed model suggested they could contribute to structure vibrations.
Název v anglickém jazyce
Influence of nasal cavities on the voice quality: Computer simulations and experiments
Popis výsledku anglicky
Nasal cavities are known to introduce antiresonances (dips) in the sound spectrum reducing the acoustic power of the voice. In this study, a three-dimensional (3D) finite element (FE) model of the vocal tract (VT) of one female subject was created for vowels [a:] and [i:] without and with a detailed model of nasal cavities based on CT (Computer Tomography) images. The 3D FE models were then used for analyzing the resonances, antiresonances and the acoustic pressure response spectra of the VT. The computed results were compared with the measurements of a VT model for the vowel [a:], obtained from the FE model by 3D printing. The nasality affects mainly the lowest formant frequency and decreases its peak level. The results confirm the main effect of nasalization, i.e., that sound pressure level decreases in the frequency region of the formants F1–F2 and emphasizes the frequency region of the formants F3–F5 around the singer’s formant cluster. Additionally, many internal local resonances in the nasal and paranasal cavities were found in the 3D FE model. Their effect on the acoustic output was found to be minimal, but accelerometer measurements on the walls of the 3D-printed model suggested they could contribute to structure vibrations.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10610 - Biophysics
Návaznosti výsledku
Projekt
<a href="/cs/project/GA19-04477S" target="_blank" >GA19-04477S: Modelování a měření strukturálně-akustických interakcí s prouděním v biomechanice tvorby hlasu člověka</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
ISSN
0001-4966
e-ISSN
—
Svazek periodika
148
Číslo periodika v rámci svazku
5
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
14
Strana od-do
3218-3231
Kód UT WoS článku
000596513200006
EID výsledku v databázi Scopus
2-s2.0-85097034242